List all users and agents in the workspace with their memory counts. Use when you need to discover who has memories stored or compare activity across entities.
AI agents call list_entities to retrieve information from Memsolus MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and enumerates existing entities (users and agents) and their memory counts without creating, modifying, deleting, or executing any operations. It has no side effects and presents only informational data, fitting the Read category with low severity due to minimal blast radius from misuse.
From the tool's definition Tool description states 'List all users and agents in the workspace' - this is a retrieval/discovery operation with no modification. The verb 'List' combined with 'discover' and 'compare activity' indicates read-only querying of metadata.
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
List all users and agents in the workspace with their memory counts. Use when you need to discover who has memories stored or compare activity across entities. It is categorised as a Read tool in the Memsolus MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Memsolus MCP Server MCP server in PolicyLayer and add a rule for list_entities: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Memsolus MCP Server. Nothing to install.
list_entities is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the list_entities rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for list_entities. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
list_entities is provided by the Memsolus MCP Server MCP server (memsolus/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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